Add a bit of functional simplicity to your everyday carry with the Ringtool ($25). While it's designed with the bicycle commuter in mind, we have a hard time thinking of situations in which you wouldn't want a multitool small enough to add to your keychain. It features a bottle opener, hex heads ranging from 3-8mm, a flathead, phillips, and torxhead driver, and two spoke wrenches, all in a two-inch ring. It's made from hardened and tempered stainless steel, and weighs just one ounce — perfect for your minimalist carry.